package com.domor.xxx.system.service;

import com.domor.xxx.common.exception.BusinessException;
import com.domor.xxx.common.utils.StringUtils;
import com.domor.xxx.system.domain.SysDictData;
import com.domor.xxx.system.domain.SysDictType;
import com.domor.xxx.system.mapper.SysDictDataMapper;
import com.domor.xxx.system.mapper.SysDictTypeMapper;
import com.domor.xxx.system.utils.DictUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.PostConstruct;
import java.util.List;

/**
 * <h3>数据字典 业务层</h3>
 * @author liyuyang
 * @date 2020/4/30
 **/
@Slf4j
@Service
public class SysDictTypeService {

    @Autowired
    private SysDictTypeMapper dictTypeMapper;

    @Autowired
    private SysDictDataMapper dictDataMapper;

    /**
     * 项目启动时，初始化字典到缓存
     */
//    @PostConstruct
    public void init() {
        log.info("初始化：加载字典数据到缓存。。。。。。");
        List<SysDictType> dictTypeList = dictTypeMapper.selectDictTypeAll();
        for (SysDictType dictType : dictTypeList) {
            List<SysDictData> dictDatas = dictDataMapper.selectDictDataByType(dictType.getDictType());
            DictUtils.setDictCache(dictType.getDictType(), dictDatas);
        }
    }

    /**
     * 根据条件分页查询字典类型
     *
     * @param dictType 字典类型信息
     * @return 字典类型集合信息
     */
    public List<SysDictType> selectDictTypeList(SysDictType dictType) {
        return dictTypeMapper.selectDictTypeList(dictType);
    }

    /**
     * 根据字典类型ID查询信息
     * @param dictId 字典类型ID
     * @return 字典类型
     */
    public SysDictType selectDictTypeById(int dictId) {
        return dictTypeMapper.selectDictTypeById(dictId);
    }

    /**
     * 删除字典类型
     * @param dictId 需要删除的数据
     * @return 结果
     */
    public int deleteDictTypeById(int dictId) {
        SysDictType dictType = selectDictTypeById(dictId);
        if (dictDataMapper.countDictDataByType(dictType.getDictType()) > 0) {
            throw new BusinessException(String.format("%1$s已分配,不能删除", dictType.getDictName()));
        }
        int count = dictTypeMapper.deleteDictTypeById(dictId);
        if (count > 0) {
            DictUtils.clearDictCache();
        }
        return count;
    }

    /**
     * 清空缓存数据
     */
    public void clearCache() {
        DictUtils.clearDictCache();
    }

    /**
     * 新增保存字典类型信息
     *
     * @param dictType 字典类型信息
     * @return 结果
     */
    public int insertDictType(SysDictType dictType) {
        int row = dictTypeMapper.insertDictType(dictType);
        if (row > 0) {
            DictUtils.clearDictCache();
        }
        return row;
    }

    /**
     * 修改保存字典类型信息
     *
     * @param dictType 字典类型信息
     * @return 结果
     */
    @Transactional
    public int updateDictType(SysDictType dictType) {
        SysDictType oldDict = dictTypeMapper.selectDictTypeById(dictType.getDictId());
        dictDataMapper.updateDictDataType(oldDict.getDictType(), dictType.getDictType());
        int row = dictTypeMapper.updateDictType(dictType);
        if (row > 0) {
            DictUtils.clearDictCache();
        }
        return row;
    }

    /**
     * 校验字典类型称是否唯一
     *
     * @param dict 字典类型
     * @return 结果
     */
    public boolean checkDictTypeUnique(SysDictType dict) {
        Long dictId = StringUtils.isNull(dict.getDictId()) ? -1L : dict.getDictId();
        SysDictType dictType = dictTypeMapper.checkDictTypeUnique(dict.getDictType());
        if (StringUtils.isNotNull(dictType) && dictType.getDictId().longValue() != dictId.longValue()) {
            return true;
        }
        return false;
    }

}
